Slider service check fails during express upgrade in kerberos
environment when HDFS client is not present on the host where smoke test
command is issued.

Move existing hdfs keytab from any other host to the host where
slider service check failed.

N/A

BUG-105092

If Ranger HA and/or Oozie Server HA is configured and a custom
composite keytab file is being used, service checks for Ranger and
Oozie will fail during the HDP 2.6 to HDP 3.0 Upgrade.

Re-create the custom Ranger and/or Oozie Server keytab files and
re-try the service check, or ignore and proceed past the service
check.

N/A

BUG-105451

Pre-upgrade checks can take a few minutes to run in large
clusters.

No known workaround.

N/A

BUG-105515

When installing a cluster on a small cluster, Ambari can place too
many service on the first node.

Use the installation wizard to place components on other servers in
the cluster that have adequate resources to run them.

N/A

BUG-105584

If Knox is being used to access the Ambari Server and the Knox
instance is being managed by the Ambari Server, Knox will be restarted
as part of certain move master operations. This can cause the UI to
unavailable.

Use Ambari Server directly when performing move master operations as
they may require Knox to be restarted, because Knox needs to be
restarted to uptake the configuration telling it to point to the new
location of the service being moved.

N/A

BUG-105609

Because of the ellipses added to component names, it can be tough to
distinguish component actions for TIMELINE SERVICE V1.5, and TIMELINE
SERVICE V2.0 READER

Hover the cursor over the component name to see the full
name.

N/A

BUG-105700

When changing value of the ranger admin or usersync log directories,
Ambari will not prompt you to restart Ranger components.

Restart Ranger using the Ambari UI after editing either of these
properties.

N/A

BUG-106557

Service checks for Atlas will fail when you have a wire encrypted
cluster with Atlas installed,

Try to remove Atlas, and re-add it.

N/A

BUG-106672

If an Ambari agents local cache of stack data has been corrupted any
attempt to add a component to that host will timeout after one
hour.

N/A

BUG-106836

t's possible for administrators to create a short URL for an Ambari
View that overlaps an existing short URL. The existing short URL will no
longer work.

Do not attempt to create duplicate short URL's, and if you do remove
the newly created short URL.

N/A

BUG-106995

When saving a configuratoin change in Ambari, if there are any
configuration validation warnings and you click Cancel, instead of
Proceed Anyway, configuration elements will not be visible in the
Advanced tab.

Refresh the page or navigate away from the configuration section and
back again.

N/A

BUG-107022

Ambari will show that a component has been successfuly decomissioned
or recomissioned even if the process was not successful.

Check the state of the component in the actual service before
attempting to retry the operation. For example if decomissioning a
DataNode, use the HDFS NameNode UI to check the state of that DataNode
before retrying the operation in Ambari.

N/A

BUG-107040

The Ranger KMS Database Testing button will not display unless "Setup
Database and Database User" is set to No.

If warned about not completing testing for Ranger KMS, continue
without testing the database.

N/A

BUG-107057

The OneFS service can disapear from the Customize Services step of
the installation when navigating past this step and back again when the
OneFS Management Pack has been installed, and OneFS is being used as the
filesystem for the cluster.

Go back to Step 4 (Choose Services), re-select OneFS, and proceed
through the wizard.

N/A

BUG-107067

Service-level keytab regeneration should not be used in this
release.

Cluster-wide keytab regeneration is the only recommended approach for
regenerating keytabs.

N/A

BUG-107479

The Zeppelin package will fail to install when using Amazon Linux
2.

On the host you wish to install Zeppelin, just use `yum install
zeppelin*` and restry the failed install operation in Ambari.

N/A

BUG-109559

NPE when migrating users table during upgrade to Ambari 2.7.0 with
Oracle DB: